The anti-impact energy-absorbing rotating anti-collision barrel is made of high-tech polymer composite material---polyurethane ,
which is made in one time . Polyurethane material has high strength of polyethylene material and high elasticity of rubber
material , so the barrel itself has high elasticity and anti-collision and wear-resistant characteristics, which can avoid being
crushed when impacted, and effectively Protecting to the fence and the passengers.
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